The equivalent expression of the given expression is √5 /x²y. Then the correct option is C.
What is an equivalent function?
The equivalent is the functions that are in different forms but are equal to the same value.
The expression is given below.
[tex]\rightarrow \rm \sqrt{\dfrac{55x^7y^6}{11x^{11}y^8}}[/tex]
The expression can be written as
[tex]\rightarrow \rm \sqrt{\dfrac{5}{x^4y^2}}\\\\\\\rightarrow \rm \dfrac{\sqrt{5}}{x^2y}\\[/tex]
More about the equivalent function link is given below.
https://brainly.com/question/889935
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